United Alkali 0-4-0 Locomotives in Spain


Class Details by Steve Llanso of Sweat House Media

Class Tejon (Locobase 20304)

Data from "2-ft, 6-in Gauge Locomotive for the United Alkali Company, Ltd", The Locomotive Magazine, Volume XX [20] (15 December 1914)), p. 308

LM comments that this design was "probably one of the largest locomotives ever built for such a confined space" as the Spanish mines owned by this British company.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassTejon
Locobase ID20304
RailroadUnited Alkali
CountrySpain
Whyte0-4-0ST
Number in Class1
Road Numbers
Gauge2'6"
Number Built1
BuilderWG Bagnall
Year1914
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 3.67 / 1.12
Engine Wheelbase (ft / m) 3.67 / 1.12
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 3.67 / 1.12
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)16,800
Engine Weight (lbs / kg)16,800
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)16,800
Tender Water Capacity (gals / ML)120 / 0.45
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.11
Minimum weight of rail (calculated) (lb/yd / kg/m)14 / 7
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)24.50 / 622
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)7.5" x 12" / 191x305
Tractive Effort (lbs / kg)3747 / 1699.61
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.48
Heating Ability
Tubes (number - dia) (in / mm)58 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 5.50 / 1.68
Firebox Area (sq ft / m2)21 / 1.95
Grate Area (sq ft / m2) 3.16 / 0.29
Evaporative Heating Surface (sq ft / m2)166 / 15.42
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)166 / 15.42
Evaporative Heating Surface/Cylinder Volume270.54
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation506
Same as above plus superheater percentage506
Same as above but substitute firebox area for grate area3360
Power L12886
Power MT757.44

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